Keep going with this - I like the small sticks, when the guy grew it went down hill in my opinion, keep them small. If I was you I'd start again from just before he grows. Also, with the energy balls try adding some filters, a glow maybe because it currently just looks like a big blob of milk :P
So yeah, good luck and keep going with this, make it fast, add blood and lots of violence and you could have a winner here. Maybe some weapons? Swords? Heh, it's up to you. Good luck, I'm interested in seeing the final fight.